Home / 487,233.20-730,849.80-319,271.60

Finding the Fourth Proportional to 487,233.20, 730,849.80 and 319,271.60

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Solution

The fourth proportional to 487,233.20, 730,849.80 and 319,271.60 is: 478,907.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,233.20 : 730,849.80 = 319,271.60 : x
  2. Step 2: Convert to fraction form
    487,233.20/730,849.80 = 319,271.60/x
  3. Step 3: Cross multiply
    487,233.20x = 730,849.80 × 319,271.60
  4. Step 4: Simplify right side
    487,233.20x = 233,339,585,005.68
  5. Step 5: Solve for x
    x = 233,339,585,005.68/487,233.20
  6. Step 6: Final answer
    x = 478,907.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.